Pokemon: Anime/Movies/MangaTalk about the Pokemon anime, movies and manga. NOTE: It's possible that there may be discussions in here that may spoil something for you if you haven't seen that episode/movie/manga before. Please use the spoiler code when appropriate.
I think the problem with Jigglypuff is that it was just so over-used that it wasn't funny. There was a huge block of episodes where literally every other one Jigglypuff showed up and dominated the last five minutes of the episode with its running gag.